1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <openssl/pem.h> 58 59 #include <stdio.h> 60 #include <string.h> 61 62 #include <openssl/buf.h> 63 #include <openssl/dh.h> 64 #include <openssl/err.h> 65 #include <openssl/evp.h> 66 #include <openssl/mem.h> 67 #include <openssl/obj.h> 68 #include <openssl/pkcs8.h> 69 #include <openssl/rand.h> 70 #include <openssl/x509.h> 71 72 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, 73 void *u) 74 { 75 char *nm = NULL; 76 const unsigned char *p = NULL; 77 unsigned char *data = NULL; 78 long len; 79 EVP_PKEY *ret = NULL; 80 81 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u)) 82 return NULL; 83 p = data; 84 85 if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) { 86 PKCS8_PRIV_KEY_INFO *p8inf; 87 p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len); 88 if (!p8inf) 89 goto p8err; 90 ret = EVP_PKCS82PKEY(p8inf); 91 if (x) { 92 if (*x) 93 EVP_PKEY_free((EVP_PKEY *)*x); 94 *x = ret; 95 } 96 PKCS8_PRIV_KEY_INFO_free(p8inf); 97 } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) { 98 PKCS8_PRIV_KEY_INFO *p8inf; 99 X509_SIG *p8; 100 int klen; 101 char psbuf[PEM_BUFSIZE]; 102 p8 = d2i_X509_SIG(NULL, &p, len); 103 if (!p8) 104 goto p8err; 105 106 klen = 0; 107 if (!cb) 108 cb = PEM_def_callback; 109 klen = cb(psbuf, PEM_BUFSIZE, 0, u); 110 if (klen <= 0) { 111 OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ); 112 X509_SIG_free(p8); 113 goto err; 114 } 115 p8inf = PKCS8_decrypt(p8, psbuf, klen); 116 X509_SIG_free(p8); 117 if (!p8inf) 118 goto p8err; 119 ret = EVP_PKCS82PKEY(p8inf); 120 if (x) { 121 if (*x) 122 EVP_PKEY_free((EVP_PKEY *)*x); 123 *x = ret; 124 } 125 PKCS8_PRIV_KEY_INFO_free(p8inf); 126 } else if (strcmp(nm, PEM_STRING_RSA) == 0) { 127 /* TODO(davidben): d2i_PrivateKey parses PKCS#8 along with the 128 * standalone format. This and the cases below probably should not 129 * accept PKCS#8. */ 130 ret = d2i_PrivateKey(EVP_PKEY_RSA, x, &p, len); 131 } else if (strcmp(nm, PEM_STRING_EC) == 0) { 132 ret = d2i_PrivateKey(EVP_PKEY_EC, x, &p, len); 133 } else if (strcmp(nm, PEM_STRING_DSA) == 0) { 134 ret = d2i_PrivateKey(EVP_PKEY_DSA, x, &p, len); 135 } 136 p8err: 137 if (ret == NULL) 138 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB); 139 140 err: 141 OPENSSL_free(nm); 142 OPENSSL_cleanse(data, len); 143 OPENSSL_free(data); 144 return (ret); 145 } 146 147 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, 148 unsigned char *kstr, int klen, 149 pem_password_cb *cb, void *u) 150 { 151 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, (char *)kstr, klen, cb, u); 152 } 153 154 #ifndef OPENSSL_NO_FP_API 155 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, 156 void *u) 157 { 158 BIO *b; 159 EVP_PKEY *ret; 160 161 if ((b = BIO_new(BIO_s_file())) == NULL) { 162 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 163 return (0); 164 } 165 BIO_set_fp(b, fp, BIO_NOCLOSE); 166 ret = PEM_read_bio_PrivateKey(b, x, cb, u); 167 BIO_free(b); 168 return (ret); 169 } 170 171 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, 172 unsigned char *kstr, int klen, 173 pem_password_cb *cb, void *u) 174 { 175 BIO *b; 176 int ret; 177 178 if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) { 179 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 180 return 0; 181 } 182 ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u); 183 BIO_free(b); 184 return ret; 185 } 186 187 #endif 188 189 /* Transparently read in PKCS#3 or X9.42 DH parameters */ 190 191 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u) 192 { 193 char *nm = NULL; 194 const unsigned char *p = NULL; 195 unsigned char *data = NULL; 196 long len; 197 DH *ret = NULL; 198 199 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u)) 200 return NULL; 201 p = data; 202 203 ret = d2i_DHparams(x, &p, len); 204 205 if (ret == NULL) 206 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB); 207 OPENSSL_free(nm); 208 OPENSSL_free(data); 209 return ret; 210 } 211 212 #ifndef OPENSSL_NO_FP_API 213 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u) 214 { 215 BIO *b; 216 DH *ret; 217 218 if ((b = BIO_new(BIO_s_file())) == NULL) { 219 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); 220 return (0); 221 } 222 BIO_set_fp(b, fp, BIO_NOCLOSE); 223 ret = PEM_read_bio_DHparams(b, x, cb, u); 224 BIO_free(b); 225 return (ret); 226 } 227 #endif 228
